Pedestrian Safety Guide and Countermeasure Selection System
Lane diet (center lane narrowed) creates space to install bike lanes which also provides additional buffer for pedestrians on sidewalks. Seattle, Washington Source: Gina Coffman, Toole Design Group
Lane narrowing can be achieved in several different ways depending on the type and scope of a project. During all projects there are opportunities to reduce lane widths to the recommended minimums (See AASHTO Greenbook for further information):14 • 9 feet lanes on rural roadways • 10 feet for most vehicular travel lanes • 10 feet for turn lanes • 11 feet for lanes to accommodate large volumes of trucks, buses, or larger vehicles (typically where volumes of large vehicles are greater than 8 percent)
With the additional space created from narrowing travel lanes, space can be redistributed for the following uses: • Bicycle lanes or cycle tracks, parking lanes, or transit lanes • Widened sidewalks, landscaped buffers with street trees, and curb extensions at crossings where on-street parking is present